Tying machine



` B. H. BUNN TYINGMACHINE Nov. 9,1926. I 1,606,290

Filed August 25, 1920 1'7 Shets-*Sheet l Nov. 9 1926. y I 1,606,290

B. H. BUNN TYING MACHINE Fi a. AU. t. 1920 .17 sheetssneu 2 Nov, 9, 1926.

B. H. BUNN TYING MACHINE Fild August 25, 17 sheets-sheet s Nov. 9, 192s. 1,606,290

B. H. BUNN TYING MACHINE Filed August 25, 1920 17 Sheets- Sheet 4 B. H. BUNN TYING MACHINE Nov. 9 1926. 1,606,290

Filed August 25, 1920 1'7 Sheets-Sheet 5 i920 17 sheets-sheet 6 B.. H. BuNN TYING MACHINE Filed Augus'tI 25,

. "v/Zs Nov. 9 1926.

Nov. 9 1926.

' B. H. BUNN TYvING MACHINE AFiled August 25, 1920 1'7 Sheets-Sheet '7 Nov. 9

B. H. BUNN TYING MACHINE Filed August 25, 1920 17 Sheets-Sheet 9 Z7 @ffy Nov. 9 1926.

B. H. BUNN TYING MACHINE Nov. 9 1926.

B. H. BuNN TYING MACHINE l F1165 August 25, 1920 `1'7 sheets-smet 11 B. H. BUNN TYING MACHINE Filed August 25, 1920 Nov. 9 1.926.

1'7 Sheets-Sheet l2 m, WIIM U lm.. \\\l Nov. 9, `1926. 1,606,290

' B. H. BUNN f TYING MACHINE Filed August 25,- 1920 17 sheets-sheet 1s Nov. 9 1926. 1,606,290

B. H. BUNN TYI NG MACHINE Filed August 25. 1920 17 sheets-Sheet 14 H. BUNN Nov. 9, 1926 TYIN: MACHINE .meets-Sheet Filed Augus Nov. 9 1926.

' B. H.,BUNN

TYING MACHINE 17 Sheets-S66 B. H. BUNN TYING MACHINE Nov. 9 1926.

1920 17 Sheets-Sheet' 1'7 Filed August 25.

Patented Nov. 9,v 192e.

BENJAMIN'H. BUNN, or C111- AGO, ILLINOIS, ASSIGNOR ".lO B. H. BUNNCQMPAIFY, Fv

CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

- TYING MACHINE.

Application ledvAugust 25, 19213.` Serial No. 405,974.

My invention relates to an apparatus ca# pable of tying up packages,'parcels and buning` 4ig. 1 is a front l. machine illustrating the several parts =theres dle's of various kinds.

One of the `more specific objects of the present invention is to provide` an apparatus of this class that comprises devlces arranged when operated to place two or more parallel wraps Aof the twine around the bundle,

package or parcel being tied, and then ses curely lto tie the twine around the` same.

In addition to the accomplishment of the object last above mentioned, my invention contemplates various improvements 1n the construction, arrangement, co-operation and mode of operation of the various parts ofA the apparatus, all of .which improvements will -be most clearly understood, from a e-4 tailed descriptionread in connection with drawings illustrating the various features of the apparatus.

In the accompanying drawings illustratmy invention,

elevational view of the of vin their normal positions; v

Fig. 2 is a vertical sectional view taken .on the line 2'-2 of Figfl, looking in the d1- "rection indicated by the arrows;

I of. the upper portion of t e rear ofthe ma- Fig. 3 is a fragmentary elevation of the upper portion of the right-hand side ofthe" machine. this view, for the purpose of clearness in illustration, showing the several parts in the positions Awhich are assumed thereby in the operation of the machine at the time' the knotter operating sector has just come into engagement with its c'o-operating knotter operating` pinion; i

Fig. 4 is a fragmentary vertical sectional view taken on the line of Fig. 2, lookin 'in the direction indicated by the arrows; ig. 5' is a fragmentary plan view'taken on the line 5-5 of Fig. 1;

Fig.- 6 is a' fragmenta elevational view chine, this View showing the several parts in the respective positions occupied thereby when the several parts shown in'Fig. 3 Vare in the positions shown in that figure ;f

view taken o n the line 7-7 of Fig. 5, looking n-.the `direction indicated by the arrows: l" 8 is a fragmentary vertical sectional y twine; Fig-7 is `a fragmentary vertical sectional.

view taken on `the line 8--8 of Fig. 6, and

Alooking in the direction. indicated by the arrows, the vseveral parts shown in this view be ing illustrated in the positions occupied thereby when the several parts shown in Figs..3 and 'have advanced to the positions shown in thoseV figures;

Fig. 9 is an isolated detail View ofl the 'mechanism shown in the upper left-hand corner of Fig.. 8, Fig. 9 illustrating the several parts in the positions occupied thereby when thel wrapping arm has traveled approximately three-fourths around on its first rotation in the cycleof machine operation;

Figs. 10'to 19, inclusive, are views illustrating positions 'assumedf by' the knotter and appurtenant mechanism during .a cycle of. operation; r

Fig. 20 illustrates a completed knot;

Fig. 21 is a vertical sectional View taken `von the line 21-21 of Fig. 1, this view illustrating in detail the mechanismfor operating the wrapping arm; Fig. 22 is al fragmentary sectional view taken on the line22-22`of Fig.. 21;

Fig. 23 .is a. fragmentary's'ectional view taken' on the line 23-2-3 of Fig.`3 ;v

Fig. 24 is a fragmentary plan'view taken on lthe 1ine24 -24 of Fig. 6;

Fig. 25.is a fragmentary plan illustrating the positions assumed by the stripperswhen the several/parts shown in Fig. 24 arel in cutter and'releaser; this Viewv may be regarded as having been taken on the line 28--28` of' Fig. 17;

Figure 29 illustrates the same parts in the positions occupied thereby after the cutter has been removed forward. to sever the Figure 30 is aY detail perspective, .illustrating Vthe twine. catcher and the manual re-` leasing lever therefor;

I Tigure 31 is 'a partially dimbled .Viewl in perspective of the'mechanism for opera@ tinlg the knetter;

cycle of operation, insures that the twineshall be held in a position where it may be grasped by the knotter, and which also serves to hold the twine tightly against the under side of the bundle to be tied during the tying operation.

Figure 35 is an isolated detail in perspective of the vertically `movable plunger 4 which, at the proper moment in the cycle of operation, moves the horizontally pivoted stripper out. of the path of the knetter, and which also causes compression of the bundle at the point where the knot is tied;

Figure 36 illustrates a modified wrapping arm construction, together with a novel arrangement of cams for operating the wrap ping arm;

Figure 37 is a fragmentary vertical sectional view taken on the line 37-37' of Fi ures 36;

igure'38 is a fragmentary sectional view taken on the line 38-38 of Figure 36 and looking in the direction indicated by the arrows, and

Figure 39 illustrates an embodiment -ofl my invention that is capable of tying both ends of a bundle at the same time.

Similar characters of reference refer to similar parts throughout the several views. In view of the fact that a number of sheets of drawings are necessarily required completely to illustrate the machine of my invention, I shall in this description first take upand describe the details -of the several parts of the machine as well as their mounting and assembly, pointing out in a general way the function of-each part and ater describe the operation of the .macnine and the manner of co-operation ofthe several parts ofthe mechanism.

Referring first to Figure 1, it will be seen that the machine comprises a. framework 50 which is conveniently` mounted on casters so that the entire machine may be. moved around as a unit. The construction of the framework may be 'varied within wide limits and I, therefore, dis ense wth ..any detailed description of t e framework, particularly since the details'of its construction are clearly shown in the several sheets of drawings.

Near its lower portion-the framework is provided with' a shelf 51 whreon is mounted the electric motor 152 and its controlling switch 53. Aswill presently appear, the motor 52 constitutes the solo source of power ually closed and an automatical y opened clutch being employed to connect the several ope-rating arts` of the machine with the motor to e ect a tying cycle and then to disconnect such parts y'from the motor. Mounted` upon the armature'of motor 52 isa pinion 54 which is permanentlyin mesh with a gearl 55. 4Gear. 55 is loosely mounted on a shaft 56 which hascmeend thereo'fjournaled .in the frame 50 andktheotlier end thereof bearing in the bracket 57. The `gear 55 and shaft 56 are operativelyA connected and dis-y connected as required by a clutch comprising the clutch element 58 which `is keyed upon shaft 56 and is normally urged into engagement with the side face of the gear 55 by av sprino 59. (See Fig. 4.) In order to disconnect the shaft 56 from the gear 55 it is neces'- .sary to retract disc/58 against the tension of lspring 59. Actuation of the clutch is effected through the lever 60,y (see Fig.' 4.) the bifurcated lower end of which engages in an annular groove inthe lutchi'element in the usual manner. The arrangement for effecting the operation of the lever l6() will later more fully appear after I have describedfthe construction and mode of operation of the treadle which permits the engagement .of the clutch Vand of the cam which effects the automatic` disengagement of the clutch.

Keyed upon the left-hand endi of the shaft 56 (Figs. 1 and 4) is a pinion 61 which is ermanently in mesh with the gear1 62. ear 62 is Akeyed upon the shaft 63 having its ends journalled in the machine( frame 50, as

the operation o f the bundle clamping and e ecting mechanism. I shall first describe e vformation of the cam channel and the mechanism for clamping a bundle during the tying operation and for ejecting thel bundle after the tying operation'v has been completed.v e 1 .The yrjglithand face of thegear 62 (as the same is viewed in Figs. 1 and 4)- is provided with a cam channel 64. This channel, as is most clearly illustrated in Figure 2 extends around the periphery of the gear for about 240 and then turns in to a point adjacent the aiis of the gear. .Operated by the gear 621i's a crankarm 65 havin one end thereof fixed -upon a shaft 66 whic is journaled in the machine frame, as is clearly shown inthe drawings. The other end-of the arm, 65 is l io provided with a pin which bears in and-constitutes a follower for the cam. channel 64. 4Figure 2 illustrates the positions normally occupied by the gear 62 and the crank arm 65. The arrow in Figure 2 indicates the normal direction of operation of the gear 62.-

Rotatably mounted upon that end of the shaft 66 opposite the arm 65is an arm 67 which is provided with a-pin 68 carrying roller 69 which is embraced by the bifurcated portion 70 of the casting 71, which is is provided with the pin 68 and roller 69.is furthermore provided with a short arm 76.`

A heavy coiled spring 77 has one end thereof connected with the arm 76 and the other 'end connected with an arm 78,"which is fixedly mounted upon the shaft 66. It will th'us .be seen that movement of the arm 78 in a clock- A wise direction (Fig. 3) will place the'spring 77 under tension and cause the arm 67 to move in a clockwise direction (Fig. 3), thereby causing the vertically movable rod 7 3 to be moved to its lower or depressed position, illustrated in Figure 3. Formed integral with the arm 78 is an arm 7 8a which lies beneath a prin 79, which projects laterally from the arm 67.

Fixed upon the upper end of the vertically reciprocating rod 7 3 is a laterally extending arm 80 carrying a vertically disposed plate 81, which is .provided at its lower end with a flange 82 having a facingy 83 of soft rubber or suitable material. The function of the parts last mentioned is to clamp the bundle to be tied during the tying operation. The table whereon the bundle to be tied is placed is indicated at 84: in Figures '1 and 8.

It will be understood that the vertically reciprocating rod 73 is operated from the transverse shaftf66, through the mechanism previously described. Attention is 'directed to the fact that the connection between the shaft 66 and the vertically reciprocating rod 73 is a yielding connection, so that bundles of various thickness may be placed under and be held by the clamping mechanism. After further descent of the rod 73 is prevented byI a bundle with which the cushion of the'lower edge of the plate 82 comes in Contact, the spring 77 yields to prevent. destruction of the bundle or damage `to the clamping mechanism'.

Referring now to Figure 2, it will be understood that when the gear' 62 rotates in the direction indicated by the arrow, the arm is turned in a clockwise direction (Fig. 2), resulting in a partial rotation of the shaft 66. ;\'.['o.'ementv thus imparted to portion the shaft 66 is transmitted to the arm 78 to place the spring 77 under tension. [Tensionlac-ed upon spring 77 causes arm(l 67 to e turned in a clockwise direction (Fig-3) until the clamping platecarried at the upper -end of the rod 73 comes into engagement with the bundle to be tied. After the bundle has been thus engaged, further downward movement ofthe rod ceases and furtherpclockwise movementfu -he arm 78 is taken up by' the spring 77 7 l shall nowdescri'be the so-calledlwiap-":

ping arm and the arrangement for operating the same from the gear 62. In this connection, attention is directed particularly' to Figures 2, 4,v 8 and 21. While the teeth of gear 62 extend entirely'around the periphery thereof, -it will ap ear that through a consider'able arc onealf of eacltooth is cut away to providea smooth surface, which,.so

faras the operating pinion :for the wrapping.'

arm' is`concerned, constitutes van interruption inthegear 62 since the said pinion indicated at 85 lies immediately above theleft-hand portion of the gear 62, as-the parts are viewed in Fig. 4. Thearc through which the 4teeth of the gear162are 'cut away is clearly indicated in yFigure 21. It' will thus l -be seen that so faras lthe'pinion 85 is conlcerned, thegear 62 is,l a mutilated gear, but

so far as the pinionl 61 isl concerned, the gear 62 is a complete gear; this because of the fact that the pinion 61 co-operates with all of the teeth of the gear 62, whereas the pinion co-operates only with the unmutilated teeth.

IThe pinion 85 is journaled upon a fixed and hollow shaft 86 which is held in position in the machine framework. by a. set

screw,87. The setscrew 8 8 carried by the. hub of pinion 85 and engaging in an annular groove in the Vhollow shaft 86 prevents axial movement of pinion 85' on shaft 86`w1thout. preventing rotary motion thereon. lt will be noted that the pinion 85-is provided with :1n-elongated hub 89 which is cut away at 90. Formed. integralv with the hub 89 is a boss 91 in which is secured and from which projects the wrapping arm 92. It will be noted that the wrapping arm extends for a distance in a line at right angles tothe axis of the pinion 85 and is then turned intoaline parallel with the axis of the pmion 85. It will be noted that the free end Vof the wrapping arm 92 is provided with an aperture 93 through which the twine may be passed. The twine is carried on .the usual spool 94, preferably disposed at the lower shown in Figure 1, is led upwardly through guides 95 and '96 to the outer end of thev hollow shaft 86.- The twine is led through' the hollow shaft 86 and out through the opening 90l in the hub of the gear 85 outwardly of the machineframework, as I 

